Trait stk::UnsafeFromValue

pub trait UnsafeFromValue: Sized {
    type Guard;
    unsafe fn unsafe_from_value(
        value: ValuePtr, 
        vm: &mut Vm
    ) -> Result<(Self, Self::Guard), StackError>;
}

A potentially unsafe conversion for value conversion.

Associated Types

type Guard

The raw guard returned.

Must only be dropped after the value returned from this function is no longer live.

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Required methods

unsafe fn unsafe_from_value(
    value: ValuePtr,
    vm: &mut Vm
) -> Result<(Self, Self::Guard), StackError>

Convert the given reference using unsafe assumptions to a value.

Safety

The return value of this function may only be used while a virtual machine is not being modified.

You must also make sure that the returned value does not outlive the guard.

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Implementations on Foreign Types

impl<'a> UnsafeFromValue for &'a [u8]

type Guard = RawRefGuard

unsafe fn unsafe_from_value(
    value: ValuePtr,
    vm: &mut Vm
) -> Result<(Self, Self::Guard), StackError>

impl<'a> UnsafeFromValue for &'a str

type Guard = RawRefGuard

unsafe fn unsafe_from_value(
    value: ValuePtr,
    vm: &mut Vm
) -> Result<(Self, Self::Guard), StackError>

impl<'a> UnsafeFromValue for &'a String

type Guard = RawRefGuard

unsafe fn unsafe_from_value(
    value: ValuePtr,
    vm: &mut Vm
) -> Result<(Self, Self::Guard), StackError>

impl<'a> UnsafeFromValue for &'a mut String

type Guard = RawMutGuard

unsafe fn unsafe_from_value(
    value: ValuePtr,
    vm: &mut Vm
) -> Result<(Self, Self::Guard), StackError>

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Implementors

impl<'a> UnsafeFromValue for &'a Bytes

type Guard = RawRefGuard

unsafe fn unsafe_from_value(
    value: ValuePtr,
    vm: &mut Vm
) -> Result<(Self, Self::Guard), StackError>

impl<'a> UnsafeFromValue for &'a Array<ValuePtr>

type Guard = RawRefGuard

unsafe fn unsafe_from_value(
    value: ValuePtr,
    vm: &mut Vm
) -> Result<(Self, Self::Guard), StackError>

impl<'a> UnsafeFromValue for &'a Object<ValuePtr>

type Guard = RawRefGuard

unsafe fn unsafe_from_value(
    value: ValuePtr,
    vm: &mut Vm
) -> Result<(Self, Self::Guard), StackError>

impl<'a> UnsafeFromValue for &'a mut Bytes

type Guard = RawMutGuard

unsafe fn unsafe_from_value(
    value: ValuePtr,
    vm: &mut Vm
) -> Result<(Self, Self::Guard), StackError>

impl<T> UnsafeFromValue for T where
    T: FromValue, 

type Guard = ()

unsafe fn unsafe_from_value(
    value: ValuePtr,
    vm: &mut Vm
) -> Result<(Self, Self::Guard), StackError>

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